Abstract
The subject of research is the piano composition Subject and Reflection from Mikrokosmos (vol. VI) by Béla Bartók. Via a detailed analysis of this work, the author proves that the structuralism of polyphony proposed by the Hungarian composer, as well as its tonal background, has a deep aesthetic and philosophical background. Bartók followed his own creative path, which was significantly influenced by his interest in folklore. His original musical language was based on such factors as original harmonics, a conciseness of musical expression (typical of folk melodies and rhythms, and foreign to the expressive poetics created by the 19th century artists) and the courage to use dissonant chords.